Method and apparatus for forming image

Details Method and apparatus for forming image Method and apparatus for forming image

2005-10-25

2005-10-25

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S236000, C347S236000, C347S246000, C359S212100

Reexamination Certificate

active

06958471

ABSTRACT:
A movable light beam is controlled and set within a tolerable range of a beam position A by using a galvano-mirror, and then a circuit offset relating to the beam position A is measured. With the circuit offset being subtracted, the movable laser beam is exactly controlled and set at the beam position A, and an output value DA from a sensor at that time is stored. Subsequently, an output value DB from the sensor is similarly stored in connection with a beam position B. An ultimate beam position of the movable laser beam M is controlled such that a difference between the output values DA and DB coincides with a difference between an output value DS of the sensor with respect to a stationary laser beam S and an output value DM of the sensor in connection with the movable laser beam M.

REFERENCES:
patent: 5929891 (1999-07-01), Komiya et al.
patent: 5995246 (1999-11-01), Komiya et al.
patent: 6462855 (2002-10-01), Komiya et al.
patent: 6693658 (2004-02-01), Ishikawa et al.
patent: 0 843 459 (2002-07-01), None
patent: 10-142535 (1998-05-01), None

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